The big surge in health care stocks earlier this month just prior to the government's decision...

The big surge in health care stocks earlier this month just prior to the government's decision on Medicare Advantage rates may have been due to an email to sent by a former top congressional aide who now happens to be an outside lobbyist for Humana (HUM-1.9%). The email, which is now subject to an SEC probe, was sent to a Washington investment-research firm and circulated to clients just minutes before the close of trading, saying that "credible sources" had told them a decision had been made to restore the payments.